Section 1983, explained in plain language.

A Section 1983 claim has two elements. First, the plaintiff was deprived of a right secured by the Constitution or by federal law. Second, the person who caused the deprivation was acting under color of state law. Section 1983 does not create rights of its own. It is the means of enforcing rights found elsewhere, most often in the First, Fourth, Eighth, and Fourteenth Amendments.

What investigation establishes:

• Exactly what happened, and in what order
• Which official did each act
• That each official was acting in an official capacity
• The harm that resulted

A person acts under color of state law when exercising power that exists only because of a position with a state or local government. Police officers, sheriff's deputies, jail and prison staff, and other public employees act under color of law when they are on duty, and sometimes when they are off duty but invoke their authority. Private companies that perform government functions, such as jail medical contractors, can also be covered. Federal officers are not covered by Section 1983. Claims against them proceed, where they are allowed at all, under the doctrine of Bivens v. Six Unknown Named Agents (1971).

What investigation establishes:

• The official's employer and assignment
• Whether a badge, uniform, or authority was used
• Contracts between agencies and private companies
• Which government each person answered to

Qualified immunity protects individual officials from damages unless they violated a right that was clearly established at the time, meaning that existing court decisions had already made the unlawfulness of the conduct apparent. Because the comparison with earlier cases depends on the specific facts, the outcome often turns on details: how far away the person was, what the person was doing, and what the officer could see. A precise factual record is the foundation of any response to this defense.

What investigation establishes:

• Specific, documented facts in place of general descriptions
• Video and measurements that fix the details
• The agency's own policies and training on the conduct
• Independent witnesses to the disputed moments

Under Monell v. Department of Social Services (1978), a local government is liable only when its own policy or custom caused the violation. It is not liable merely because it employs the officer. A custom can be shown by a pattern of similar incidents, and City of Canton v. Harris (1989) allows a claim for failure to train where the failure reflects deliberate indifference. Local governments cannot claim qualified immunity, which makes these claims especially important.

What investigation establishes:

• Prior similar incidents and complaints
• Written policies, and the actual practice
• Training records for the officers involved
• What policymakers knew, and when

Section 1983 contains no statute of limitations. Federal courts apply the personal injury limitations period of the state where the violation occurred, so the deadline can be as short as one or two years and differs from state to state. Related state law claims may require a written notice of claim within months. Evidence is lost on a much shorter timetable than any of these. An attorney should be consulted promptly about the deadlines that apply.

What investigation establishes:

• The exact date of each event
• Early requests that stop routine deletion of video
• Witness statements taken while memories are fresh
• Records gathered before a lawsuit is filed

Several doctrines can bar an otherwise valid claim. Under Heck v. Humphrey (1994), a claim that would imply a criminal conviction is invalid cannot proceed until the conviction is overturned. Under the Prison Litigation Reform Act, prisoners must exhaust the facility's grievance process before suing. States and state agencies generally cannot be sued for damages, and prosecutors and judges have absolute immunity for their core functions. An attorney evaluates these issues, and an investigation supplies the records needed to do so.

What investigation establishes:

• The complete record of any criminal case
• Grievances filed, with dates and responses
• Which agency employed each defendant
• The role each official actually played